Finding the Fourth Proportional to 1,789.15, 2,469.16 and 1,081.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.15 : 2,469.16 = 1,081.17 : x
2. Step 2: Convert to fraction form
   1,789.15/2,469.16 = 1,081.17/x
3. Step 3: Cross multiply
   1,789.15x = 2,469.16 × 1,081.17
4. Step 4: Simplify right side
   1,789.15x = 2,669,581.72
5. Step 5: Solve for x
   x = 2,669,581.72/1,789.15
6. Step 6: Final answer
   x = 1,492.09